The Law of Inverse Favoritism refers to the tendency of fanfiction authors to make their FAVORITE characters suffer the most, either INSTEAD of the ones they hate, or ALONGSIDE the ones they hate. For example, if you were a huge Sonic fan, and Tails was your favorite character, he would tend to go through the most serious shit in any stories you wrote, maybe he'd lose one of his tails, maybe he'd die, maybe he'd lose someone who meant a lot to him (Like Sonic himself).

This law does not always apply, however, and some authors may like certain characters TOO much to make them eligible for this, as if there's a sort of uncanny valley where, right before the character means the most to you out of any, ones short of that standard suffer, but the ones shorter or ahead of the valley do not.
This seems to often be determined by how innocent or pure the character is. The moreso they are, the more likely they'll be excluded. For example, I often write Animaniacs fanfics, and Wakko never gets hurt as badly as anyone else, so he would probably be an exception for the Law of Inverse Favoritism.
Alice: You know how people who write fanfics often tend to torture their FAVORITE characters, and not the ones they HATE?

Bob: Yeah, I'm often guilty of that myself. I know how that works.

Alice: Well, you're one of my favorites to write in my stories now, so get ready for hell. That doesn't bother you at all, does it?

Bob: I t 's v e n g e a n c e f o r a l l I ' v e w r i t t e n

Alice: I also came up with a name for that. I'll call it "The Law of Inverse Favoritism".

Bob: Accurate.
(True story between me and a friend, names changed though for anonymity purposes)
by Grabacr November 25, 2022
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(N) Instead of sitting on your hand to make it feel like someone else is giving u a handjob sit on your dick so it feels like your giving someone else a handjob
Man I gave myself the best Inverse Handjob last night.
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The act of having one’s head up their ass.
During rainy weather, people driving in this area tend to suffer from Cephalorectal Inversion.
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A self aware (in this case a potentially talented person in another endeavor) or very dim comedian that is such a lousy performer they elicit laughter towards them rather than the joke itself without realizing it. Rather, being laughed at instead of laughing with the audience.
Tony Stark: I'm pretty drunk wanna laugh at some 90s inverse comedians?
Captain America: Sure
Tony Stark: Pauly Shore or Rob Schneider?
Captain: I never saw Biodome, might as well get that out of the way.. but I need to go get something from my guy before we watch that one
by BtrSpdr April 12, 2018
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Between two persons with male genitalia. One wears a strap-on backwards and fucks the recieving participant's ass by having said participant doing a head stand with hips and knees bent 90° in a sitting position. The participant with strap on, stands up and sits down on the chair structure formed by the recieving participant, inserting the strap on into the recieving participants asshole.
Two male gymnasts tried the reverse inverse pegging after receiving their new strap on.
by Tuguit August 17, 2020
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It is when you have you head stuck up your ass!! Inversion meaning unaware of anything or everything around you,
The greater at Walmart is suffering from a rectial crainal inversion
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